Fig. 2

Eccentricity index. Short-axis steady-state free precession cine MR images at end systole (left) and end diastole (right). The length of the short-axis diameter (perpendicular to the interventricular septum) from the left ventricular septal endocardium to the endocardium of the postero-lateral free wall is defined as D1. The length of the orthogonal short-axis diameter between the endocardial surfaces of the anterior and inferior LV free wall is defined as D2. Left ventricular eccentricity at end systole or end diastole was defined as the ratio of D2/D1.The eccentricity index was determined by dividing the D2/D1 throughout the cardiac cycle